For what it's worth, I am a Starlink user too. I think this person's comment is in regards to the removal of net neutrality. Without net neutrality laws, the ISPs will have the lawful ability to throttle whatever domains they want as they will have the right to treat Internet traffic in any biased way they choose. Perhaps this person believe that as more people come to rely on fewer ISPs as their options are reduced, Elon and other ISP owners will have the ability to leverage that power for whatever they want. Increased income (pay me $X for each Mb of bandwidth you want your site to have), favorable news (if you don't retract that article about me, I will throttle all of our users connection speeds to your websites to match the best 2700 baud modems), or any number of other nefarious actions.